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Non-contact type infrared temperature detecting system based on micromachine thermopile

An infrared temperature measurement, non-contact technology, applied in the field of infrared detection, achieves the effects of low cost, high temperature measurement accuracy and reasonable structure design

Inactive Publication Date: 2013-10-09
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0005] Thermopile infrared temperature measurement is radiation temperature measurement, which converts the temperature change caused by radiation into thermoelectric potential to measure the target temperature. Like other thermal detectors, there is also a problem of thermal balance

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  • Non-contact type infrared temperature detecting system based on micromachine thermopile

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Embodiment Construction

[0018] The non-contact infrared temperature measurement system based on the micromechanical thermopile provided by the present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0019] Such as figure 1 As shown, the non-contact infrared temperature measurement system based on micromechanical thermopile provided by the present invention includes: diaphragm 1, ceramic attenuator 2, sensor 3, analog circuit 4, data acquisition card 5 and computer 6; among them: diaphragm 1 is a light barrier with a round hole in the middle, which is located at the front end of the heat source 7 to be tested, and is used to standardize the heat radiation area of ​​the heat source 7 to be tested;

[0020] Ceramic attenuation sheet 2 is a zirconia ceramic attenuation sheet. Since the attenuation effect of ceramic materials on infrared / millimeter waves is essentially the result of the absorption and scattering of incident waves by dielectric particles,...

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Abstract

A non-contact type infrared temperature measuring system based on a micromachine thermopile comprises a diaphragm, a ceramic damping piece, a sensor, a simulation circuit, a data collecting card and a computer. The non-contact type infrared temperature measuring system based on the micromachine thermopile is suitable for temperature measuring of a long-distance target, a high-speed moving target, an electrification target and other untouchable targets especially in some dangerous environments. Compared with a traditional thermocouple, a thermometer and other thermodetectors, the system does not need to be in contact with a measured object by infrared temperature measuring, long-distance temperature measuring can be achieved, and meanwhile tiny temperature fluctuation of the object can cause large changing of radiation energy, so that an infrared thermodetector is high in sensitivity, and the minimum measurable temperature difference of the micromachine thermopile infrared thermodetector can reach 0.01 DEG C. In addition, the system has the advantages of being reasonable and simple in structural design, low in cost, high in temperature measuring accuracy and the like.

Description

Technical field [0001] The invention belongs to the technical field of infrared detection, and particularly relates to a non-contact infrared temperature measurement system based on a micromechanical thermopile. Background technique [0002] At present, there are various methods for measuring transient surface temperature, which can be summarized into two categories: contact temperature measurement and non-contact temperature measurement. Contact temperature measurement is not suitable for high temperature measurement, because it is easy to damage the sensor, and non-contact temperature measurement does not need to directly contact the temperature source. The temperature can be measured indirectly through the radiation generated by it, which can realize remote temperature measurement and is not easily affected. The influence of the surrounding environment. [0003] Non-contact temperature measurement is based on the principle of thermal radiation or electromagnetic principle. Duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/12
Inventor 马全亮崔健杜勇尚学军董俊国康景林梁晓虎李春辉张金萍
Owner STATE GRID CORP OF CHINA
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